KR930024275A - Interpolation Filter Using Subfilter - Google Patents

Interpolation Filter Using Subfilter Download PDF

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Publication number
KR930024275A
KR930024275A KR1019920009192A KR920009192A KR930024275A KR 930024275 A KR930024275 A KR 930024275A KR 1019920009192 A KR1019920009192 A KR 1019920009192A KR 920009192 A KR920009192 A KR 920009192A KR 930024275 A KR930024275 A KR 930024275A
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KR
South Korea
Prior art keywords
filter
sub
transmission rate
subfilter
input data
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Application number
KR1019920009192A
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Korean (ko)
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KR0176130B1 (en
Inventor
이광용
강세진
전필성
이재곤
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정용문
삼성전자 주식회사
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Priority to KR1019920009192A priority Critical patent/KR0176130B1/en
Publication of KR930024275A publication Critical patent/KR930024275A/en
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Publication of KR0176130B1 publication Critical patent/KR0176130B1/en

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    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00Networks using digital techniques

Abstract

N개의 필터 계수를 갖는 인터폴레이션 필터 구현시 N/4개의 필터 계수를 갖는 4개의 서브필터를 이용하여 필터연산 횟수를 대폭 감축한다. 이를 위하여 제1전송 속도로 수신되는 데이타를 멀티플렉싱하여 제1서브 필터에서 제4서브 필터로 각각 인가한다. 그러면 각각의 서브 필터는 수신데이타를 N/4개의 필터 계수와 각각 연산하여 여파된 최종 데이타를 출력한다. 그러면 제1서브 필터에서 제4서브 필터에서 처리되는 최종 데이타를 각각 제2전송 속도로 인터플레이션하여 출력한다.When implementing an interpolation filter having N filter coefficients, the number of filter operations is greatly reduced by using four subfilters having N / 4 filter coefficients. To this end, the data received at the first transmission rate is multiplexed and applied from the first subfilter to the fourth subfilter, respectively. Each subfilter then calculates the received data by calculating received data with N / 4 filter coefficients, respectively. Then, the final data processed by the fourth sub-filter in the first sub-filter are output by inflation at the second transmission rate.

Description

서브 필터를 이용한 인터폴레이션 필터Interpolation Filter Using Subfilter

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제7도는 본 발명에 따라 서브필터를 이용한 인터폴레이션 필터의 구성도, 제8도는 본 발명에 따른 인터폴레이션 서브 필터시의 처리흐름도, 제9도는 여파기 계수가 64일시의 본 발명에 따른 FIR필터의 구성도.7 is a block diagram of an interpolation filter using a subfilter in accordance with the present invention, FIG. 8 is a flow chart of processing in an interpolation subfilter according to the present invention, and FIG. 9 is a block diagram of an FIR filter in accordance with the present invention when the filter coefficient is 64. .

Claims (2)

N개의 필터 계수를 갖는 인터폴레이션 필터에 있어서, 제1전송 속도를 갖는 입력 데이타들을 순차적으로 수신하며, 상기 입력 데이타 수신시 마다 스위칭되어 수신되는 입력 데이타들을 순차적으로 제1단자-제4단자로멀티플렉싱 출력하는 수단과, 상기 제1단자-제4단자에 각각 대응되어 제1서브필터-제4서브필터가 연결되고, 상기 서브필터들이 N/4개의 고유 필터 계수들을 저장하고 있으며, 수신되는 상기 입력데이타를 N/4회 연산하여 여파된 출력 데이타를 발생하는 필터 수단과, 상기 제1서브필터-제4서브필터의 출력단과 각각 연결되며, 제2전송속도로 스위칭되 상기 제1서브필터-제4필터로 부터 순차적으로 출력되는 출력 데이타를 업-샘플링하여 출력하는 수단으로 구성된 것을 특징으로 하는 인터폴레이션 필터.An interpolation filter having N filter coefficients, the input data having a first transmission rate is sequentially received, and the multiplexed outputs are sequentially output from the first terminal to the fourth terminal by sequentially switching the received input data upon receiving the input data. And a first sub filter and a fourth sub filter corresponding to the first terminal and the fourth terminal, respectively, and the subfilters store N / 4 unique filter coefficients, and receive the input data. Filter means for generating the filtered output data by calculating N / 4 times, and the output ends of the first sub-filter and the fourth sub-filter, respectively, and are switched at a second transmission rate so as to switch the first sub-filter to the fourth. An interpolation filter comprising means for up-sampling and outputting output data sequentially output from a filter. N/4개의 계수를 갖는 제1서브필터-제4서브필터를 구비하며, 제1전송속도를 갖는 입력데이타를 제2전송속도로 인터플레이션하여 필터하는 방법에 있어서, 제1전송 속도를 갖는 입력데이타X((n)를 수신하는 과정과, 상기 수신된 입력데이타X((n)를 이용하여 하기와 같은 출력데이타 Y((n)을 발생하며 여파하는 과정과,상기 여파된 출력데이타X((n)을 제2전송 속도로 인터폴레이션하여 출력하는 과정과, 상기 과정-수행후 현 서브필터 영역에서 다음 서브필터 영역으로 스위칭되어 다음 입력데이타X((n)을 대기하는 과정으로 이루어져 제1전송 속도를 갖는 입력 데이타를 상기 제1서브필터-제4서브필터 영역으로 순차적으로 스위칭시켜 제2전송 속도로 인터플레이션 필터링 함을 특징으로 하는 방법.A method for filtering by filtering an input data having a first transmission rate at a second transmission rate, the method comprising: a first sub-filter having a fourth sub-filter having N / 4 coefficients; the method comprising the steps of: receiving the data X ((n) and the step of generating the output data Y ((n) as described below by using the received input data X ((n) and the filtered and, Interpolating and outputting the filtered output data X ( (n) at a second transmission rate, and after the process-execution, switch from the current subfilter area to the next subfilter area to wait for the next input data X ( (n)) . And sequentially switching the input data having the first transmission rate to the first subfilter-fourth subfilter region to perform the inflation filtering at the second transmission rate. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019920009192A 1992-05-28 1992-05-28 Interpolation Filter Using Subfilter KR0176130B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019920009192A KR0176130B1 (en) 1992-05-28 1992-05-28 Interpolation Filter Using Subfilter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019920009192A KR0176130B1 (en) 1992-05-28 1992-05-28 Interpolation Filter Using Subfilter

Publications (2)

Publication Number Publication Date
KR930024275A true KR930024275A (en) 1993-12-22
KR0176130B1 KR0176130B1 (en) 1999-04-01

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